The Precision Scientific Instrument Company Manufactures Thermometers That Are Supposed $$\text { Find } Q _ { 3 } \text {, the third quartile. }$$

Multiple Choice

The Precision Scientific Instrument Company manufactures thermometers that are supposed to give readings of 0°C at the freezing point of water. Tests on a large sample of these thermometers reveal that at the freezing point of water, some give readings below 0°C (denoted by negative numbers) and some give readings above 0°C (denoted by positive numbers) . Assume that the mean reading is 0°C and the standard deviation of the readings is 1.00°C. Also assume that the frequency distribution of errors closely resembles the normal distribution. A thermometer is randomly selected and tested. Find the temperature reading corresponding to the given information.
- $$\text { Find } Q _ { 3 } \text {, the third quartile. }$$

A) -1.3°
B) 0.82°
C) 0.53°
D) 0.67°